<s>
The	O
Open	O
Contributors	O
Corporation	O
for	O
Advanced	O
Internet	O
Development	O
(	O
OCCAID	B-Protocol
)	O
was	O
a	O
non-profit	O
consortium	B-Application
that	O
operated	O
one	O
of	O
the	O
largest	O
IPv6	B-Protocol
research	O
networks	O
in	O
the	O
world	O
.	O
</s>
<s>
OCCAID	B-Protocol
facilitated	O
collaboration	O
between	O
research	O
communities	O
and	O
the	O
carrier	O
industry	O
,	O
serving	O
as	O
a	O
testbed	O
and	O
proving	O
ground	O
for	O
advanced	O
Internet	O
protocols	O
.	O
</s>
<s>
Most	O
of	O
its	O
participants	O
connected	O
to	O
the	O
network	O
using	O
Ethernet	O
connections	O
in	O
areas	O
where	O
OCCAID	B-Protocol
has	O
last-mile	B-Protocol
network	O
connections	O
.	O
</s>
<s>
OCCAID	B-Protocol
's	O
primary	O
collaboration	O
activities	O
had	O
involved	O
IPv6	B-Protocol
and	O
multicast	O
protocols	O
.	O
</s>
